CN105307777A - Adjustable arc of coverage cone nozzle rotary stream sprinkler - Google Patents

Abstract

A conical valve assembly comprising an upper valve member having a conical top and a stepped helical top side surface, and a lower valve member including a central opening with a stepped helical A valve surface surrounds the central opening. The upper valve member is mounted in the lower valve member such that the lower valve member is rotatable and axially movable relative to the upper valve member. Rotation of the lower valve member allows adjustment of the arcuate slot opening that provides discharge flow from the cone valve nozzle assembly directly onto the rotary distributor to provide the desired arc of sprinkler coverage.

Description

Cone nozzle swivel stream sprinkler with adjustable coverage arc

Cross References to Related Applications

This application claims benefit and priority of U.S. Provisional Patent Application Serial No. 61/829776, entitled Adjustable Coverage Arc Cone Nozzles for Water Stream Rotary Sprinklers, filed May 31, 2013, in its entirety Incorporated herein by reference.

Background technique

technical field

The invention relates to a tapered nozzle assembly used in a rotary nozzle spraying device and a stepped spiral, matched up and down, arc-shaped slit nozzle with adjustable length, the arc-shaped slit nozzle is used to direct water Discharges upwards into a self-rotating driven and grooved distributor combined with a modified nozzle housing assembly including a throttle valve, cover arc construction, and nozzle housing assembly exterior Secondary pop-up device for a rotary water distributor.

related technology

Typically, conventional rotary water sprinklers do not allow adjustment of the arc of coverage in a single nozzle assembly beyond 120 degrees, or 180 degrees. Some rotary stream nozzle sprinklers that allow partial arc adjustment require the use of a "deflector" located downstream of the nozzles of the partially adjustable arc set in order to direct the flow further out from the center before punching the rotary trench distributor to Prevent it from stamping a sealed swivel joint on the support shaft of a rotary water distributor filled with a viscous damping fluid. When the water stream hits the deflector downstream of the nozzle, the flow spreads out, thus requiring interaction between the end of the ribs used to form the distributor channel and the deflector, and reducing the large arc around the opening The flow uniformity of the flow, the above-mentioned flow deflector, for example, the flow deflector described in US Patent No. 6,651,905. This results in a distortion of the water spray pattern.

A sprinkler head according to an embodiment of the present disclosure includes a base; a tapered adjustable nozzle defining an adjustable arc-shaped discharge orifice; a punched rotary water distributor; and an arc-shaped adjustment ring rotatably mounted on the base, the arc-shaped adjustment ring being operatively connected to the nozzle to adjust the arc-shaped discharge hole.

Accordingly, it would be beneficial to provide a nozzle assembly for use in a rotary water nozzle sprinkler and a rotary nozzle sprinkler that avoids these and other problems.

Contents of the invention

It is an object of the present invention to provide a curved slot nozzle assembly with adjustable coverage, preferably substantially fully adjustable coverage, which discharges water directly onto a rotary water distributor, which nozzle assembly Provides improved uniformity throughout the settable arc of coverage and allows upstream specific pattern setting and better flow with less water turbulence in the discharge to the rotary distributor so that the water flow The drop pattern has a larger and more uniform water distributor. In general, greater nozzle stream turbulence results in greater turbulent velocity and results in smaller drop sizes and a greater extent of stream break-up. This limits the distribution uniformity performance, ie pattern performance, of the rotary water sprinkler. According to the present disclosure, these problems can be avoided by providing a nozzle with a fully settable arc, which is constructed by the interaction between the upper stepped helical conical surface and the lower stepped helical conical surface at a large discharge angle. Discharges water directly into a grooved rotary distributor trough. This configuration provides a tapered cylindrical discharge curtain or flow that impinges on the rotary distributor and falls into the rotary distributor at a point sufficiently around the distributor's circumference to fully capture the flow in the groove. That is, the depth and width of the groove at the circumference is sufficient to accommodate the flow rate through the adjustable arc-shaped slit. The distance the rotary distributor is positioned above the adjustable arc slit is related to the optimum discharge angle as well as the slit width, which determines the water flow rate and sprinkler delivery rate per unit perimeter.

It is an object of the present invention to provide a simple and easy to manufacture conical nozzle assembly comprising a small diameter upper valve member and a lower concentric valve member in which the upper valve member is mounted. The upper valve member includes an upper portion having a conical top with a stepped helical bottom side valve surface and a conical angle selected to optimize the discharge of the water curtain to the multi-groove rotary underneath the rotary distributor that distributes the water outward from the sprinkler. A matching stepped helical coaxial top surface is preferably provided in a lower valve member which is selectively rotatable and axially movable about a center of rotation. The tapered nozzle assembly is provided with adjustable length nozzle slits or openings for the selective arc of coverage and discharges a thin curtain of water that tapers outward to a multi-groove rotary distributor that The water dispenser is rotatably mounted above the nozzle assembly.

An advantage of the tapered nozzle assembly of the present disclosure is that because its tip inlet end has the smallest diameter, it allows for the largest slit width, which reduces clogging at low flow rates. In addition, the valve member has a coaxial support shaft projecting downwardly through aligned ribs at the inlet end of the tapered nozzle to provide selectable flow restriction, if desired, in opening and closing the arcuate slit, Either during the opening of the interacting stepped helical portion around the valve member, for mode adjustment or for continuous coaxial alignment of the upper and lower conical valve members.

A nozzle assembly according to an embodiment of the present application includes an upper valve member including a conical top with an upper stepped helical bottom side valve surface, and a lower valve member having a central opening and a valve member surrounding the central opening. a lower stepped helical top side valve surface in which the upper valve member is mounted such that the lower valve member is movable relative to the upper valve member such that the upper stepped helical bottom side valve surface of the upper valve member is in contact with the lower stepped helical The interaction between the top side valve surfaces defines an arcuate slit of desired length to provide a cone of discharge water flow over a desired arc of coverage as water flows through the valve assembly.

The sprinkler head nozzle assembly according to an embodiment of the present disclosure includes a nozzle housing including an inlet of pressurized water and an outlet downstream of the inlet; a rotating arc adjustment ring installed on the On the nozzle housing, so that the arc adjustment ring can be rotated to expand and reduce the arc outlet, so as to set the coverage arc of the sprinkler nozzle assembly; the rotation range adjustment ring, the rotation range adjustment ring is installed upstream of the arc adjustment ring on the housing so that rotation of the range adjustment ring increases and decreases the downstream flow area to control flow to the arced outlet; and a rotary distributor mounted on a The arc-shaped adjustable nozzle includes a valve assembly positioned below the rotary water distributor in the nozzle housing and operable to direct water to the rotary water distributor on a central axis of the nozzle. The valve assembly includes an upper valve member including a top with a tapered stepped helical bottom side valve surface, and a lower valve member including a central opening and an upper stepped helical top side surrounding the central opening a valve surface, the upper valve member mounted in the lower valve member such that the lower valve member is movable relative to the upper valve member such that the upper stepped helix bottom side valve surface of the upper valve member is in contact with the lower stepped helix of the lower valve member The interaction between the top side valve surfaces defines an arcuate outlet to provide a conical discharge of water over a desired arc of coverage as water flows through the valve assembly.

Other features and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings.

Description of drawings

1 illustrates a cut-away front view of a nozzle housing of a rotary sprinkler including a cone valve assembly that is open on one side and is open on one side in accordance with an embodiment of the present disclosure. the other side is closed; and a rotary sprinkler mounted on the shaft of the rotary sprinkler in the inoperative retractable position of the rotary sprinkler above the arc-adjustable cone valve assembly Type water distributor.

Fig. 2 shows a cross-sectional view of the nozzle housing of the rotary water sprinkler in Fig. 1, wherein the stepped spiral cone valve assembly with adjustable radian is in the fully closed position, but the rotary water distributor is located in the nozzle housing It is operatively positioned so as to illustrate the angle of discharge of water where it will impinge on a rotary distributor comprising a lower valve member as shown in Figure 3 below.

Fig. 2A shows a cross-sectional view of the nozzle housing of the rotary water sprinkler in Fig. 1, wherein the stepped spiral cone valve assembly with adjustable arc is in the fully closed position, but the rotary water distributor is located in the nozzle housing It is operatively positioned so as to illustrate the angle of discharge of water where it will impinge on a rotary distributor comprising a lower valve member as shown in Figure 3 below.

Figure 3 shows a perspective view of the lower valve member with an upstream flow limiting detent;

Figure 3A shows a perspective view of the same lower valve member, but without the upstream flow limiting detent.

Figure 4 shows a perspective view of the upper valve member.

Figure 5 shows a perspective view of the cone valve assembly set at approximately 270 degrees, viewed from above the cone valve assembly, to provide an outwardly tapering cylindrical water curtain of a 270 degree segment.

Figure 6 shows a cutaway front view of the rotary nozzle sprinkler assembly including the pressure driven lower piston and compressed retraction spring with the rotary water distributor extending from its nozzle housing in its operative position.

detailed description

U.S. Patent Application Serial No. 12/348,864, filed January 5, 2009, titled Coverage Radius and Coverage Adjustable Stream Rotary Sprinkler, provides an overview of the general structure and operation of rotary stream nozzle sprinklers. description, which is hereby incorporated by reference in its entirety. Some of the problems inherent in the operation of conventional rotary sprinklers are as described above.

The cone valve nozzle assembly 3 of the present disclosure may be configured to be incorporated into the structure of the above-described water flow rotary sprinkler, and is preferably provided in a nozzle housing assembly 5, such as shown in FIG. The top of the riser (riser) assembly 80 of the type sprinkler. The threads 200a of the lower nozzle housing member 200 of the nozzle housing assembly 5 can be used to engage corresponding threads on the riser 80 of such a pop-up sprinkler in a conventional manner. The nozzle housing assembly 5 also includes an upper nozzle housing member 100 .

As shown in FIG. 1, the conical valve member 3 comprises, for example, an upper valve member 31 and a lower valve member 30, respectively, and, for example, as shown in FIG. 5 provides drainage so that the water punches the rotary water distributor 7 at the desired optimum flow angle to provide a more effective spraying device. Angle B is preferably between about 11 degrees and 17 degrees. Specifically, as shown at 4 in FIG. 2, water flows along the tapered outer surface of the top of the arc-shaped upper valve member 31 and the inner surface of the lower valve member 30, so that the water is discharged to the rotating shaft at a desired angle. Type water distributor 7. Setting the nozzle discharge in a conical shape at the desired angle to strike the rotary water distributor 7 provides optimum uniformity of the water curtain striking the distributor, thus avoiding distortion of the sprinkler output.

Referring to FIG. 1 , for example, the water stream flows into the central region of the water jet housing 5 through an opening shown at 20 . As noted above, when water is supplied, the nozzle housing is typically mounted on top of the riser of the pop-up sprinkler extending from the base, see eg FIG. 6 . Water passes through the upstream restriction member 26 , and specifically through the opening 24 formed therein, into the interior region 22 immediately upstream of the arcuate adjustable cone nozzle assembly 3 . The nozzle assembly 3 is shown in a closed position in FIG. 2 . The flow slot channel 36 is shown open on the left side of FIG. 1 and discharges water upwards and outwards at a desired or optimal angle for contact with the bottom surface 40 of the water distributor 7 . The water distributor 7 further collects the flow of water flowing into the gutter 7a of selected width for selectively distributing the outwardly radiating water column at the selected elevation angle of the outlet of the gutter to provide an outward surround spray using the nozzle assembly 3 Proper and uniform water distribution of the device.

It is desirable that the water curtain or stream discharged from the valve assembly 3 have a uniform circumference because as the rotary distributor 7 rotates, different water flow channels of different widths interact with the water curtain. Different distributions of the water flow around the circumference can be achieved for selected modes by means of the upstream inlet 50 of the water via the flow reduction detent 32 (see FIG. 3 ), if desired.

Figure 4 shows in perspective the upper valve member 31 and its upper stepped helical bottom side surface 31a, and surface 31b, see for example Figure 5, as the lower valve member 30 rotates clockwise, the surface 31b becomes the adjustable slit 36 fixed end.

FIG. 3 shows in perspective the lower valve member 30 and the lower stepped helical top side valve surface 30 a surrounding the opening O. FIG. The lower valve member 30 is held in a suitably constant axial position during sprinkler operation by the pitch of its housing threads and the cylindrical sealing surface 56 via the mounting threads 55 and sealing surface 56 . The lower valve member 30 can be selectively axially moved up or down by the rotation of the arc adjusting ring 60 to change the covering arc of the spraying device. Rotation of the arc adjustment ring 60 rotates the lower valve member 30 so that the threads 55 provided for axial movement of the lower valve member precisely match the pitch of the mating upper and lower stepped spiral cone nozzle valve surfaces.

Axial rotational movement of the lower valve member 30 causes the circumferential nozzle slit opening 36 to increase or decrease as necessary to provide the desired arc of coverage. The water passes through the openings 36 to provide a water curtain of nozzle discharge water that impinges on the rotary distributor 7 which further utilizes the nozzle assembly 3 to direct the water around the sprinkler radially outwardly circumferentially. This enables the arc of coverage of the sprinkler to be varied in any arc throughout the range from 0 degrees up to 360 degrees. It should be noted that in order to ensure the rotation of the water distributor 7, a covering arc of about 60 degrees is generally required.

The outer radius adjustment ring 60 snaps into a groove shown at 60a in FIG. 2 and is rotationally connected to the lower valve member 30 via a leg, for example shown at 60b in FIG. 5 .

The upper valve member 31 is shown in FIG. 4 . A clearance slot 70 interrupting the circumference is shown below the support shaft 46 . This slit allows the snap edge or lip 71 of the lower portion of the upper valve member 31 to compress when inserted into the opening O of the lower valve member 30 and to pop out of the bottom at the desired axial position in the upper nozzle housing 100. , to hold the upper valve member in the desired axial position and fixed rotational position. In this way, the upper valve member 31 is axially and rotationally fixed, while the rotation of the lower valve member 30 is used to control the arc of coverage of the water flow from the valve 3 .

Figure 5 shows a top view of the cone valve assembly 3 set to provide water distribution in an arc of 270 degrees. That is, as shown, the opening 36 is positioned such that a sprinkler using the conical nozzle valve assembly 3 will provide a 270 degree arc around the sprinkler between the edge 31b of the upper valve member 31 and the edge 30b of the lower valve member 30 water distribution. As described above, rotation of the lower valve member 30 may cause the circumferential nozzle slit opening 36 to increase or decrease depending on the user's desired arc of coverage.

Figure 6 shows the rotary nozzle assembly 1 comprising a pressure driven lower piston 78 and compressed retraction spring 79, with the rotary water distributor 7 extending from its nozzle housing 5 in its operative position. The water distributor 7 includes a viscous brake assembly 91 to limit the speed of rotation of the water distributor. The viscous brake assembly generally comprises a chamber in the deflector 7 filled with a viscous fluid. The shaft 90 extends into said chamber through a seal or seals, and a bearing or bearings which allow the deflector 7 to rotate relative to the shaft 90 . The stator is fixedly connected to the shaft in the chamber so that when the water distributor rotates the stator remains fixed to limit the speed of rotation. In the preferred embodiment, the nozzle housing assembly 5 is mounted on top of a riser 80 which is preferably removably mounted in a base connected to the water supply. The lower nozzle housing member 200 includes a restriction member 26 that may be used to restrict flow through the opening 24 as described above. The upper nozzle housing member 100 is disposed above the lower member 200 while the nozzle assembly 3 including the upper valve member 31 and the lower valve member 30 is installed therein. The arc setting ring 60 is mounted on top of the upper member 100 and is operably connected to the lower valve member 30 to rotate the lower valve member 30 and move the lower valve member axially as described above. Ring 60 is secured into the slot shown at 60a. The central through hole 92 of the upper valve member support shaft 46 allows the shaft 90 to pass through the valve assembly 3 to extend the water distributor 7 or to allow the spring 79 to retract the water distributor 7 into the upper nozzle housing member 100 .

While the invention has been described in terms of specific embodiments thereof, it is evident to those skilled in the art that many other modifications and improvements and other uses are apparent.

Claims (27)

1. the valve module used in rotary current flusher, described valve module comprises:

Upper valve component, described upper valve component comprises the conical top with step helix bottom side valve surface; With

Lower valve component, described lower valve component comprises central opening and the lower step spiral top side valve surface around described central opening, described upper valve Components installation is in described lower valve component, described lower valve component is made to be moveable relative to described upper valve component, so that the interaction between the step helix top side valve surface of the step helix bottom side valve surface of described upper valve component and described lower valve component limits adjustable arcuate slots of Len req, with when water flows through described valve module, there is provided and spread on required covering radian, the water discharge stream of conical nozzle.

2. valve module according to claim 1, wherein, described upper valve Components installation, in described lower valve component, makes described upper valve component remain on fixing axial location and can not rotate.

3. valve module according to claim 2, wherein, described upper valve component comprises the locking lip of the circumference extended around described upper valve member bottom section, moves axially to prevent described upper valve component.

4. valve module according to claim 3, the adjustment slit that central shaft that be included in described upper valve member bottom section further, that be parallel to described nozzle assembly extends, when arriving desired location with the described upper valve component of box lunch, the bottom of described upper valve component, comprise the locking lip of described circumference, elastic deformation also stretches out.

5. valve module according to claim 2, wherein, described upper valve component comprises protuberance, and described protuberance extends radially outwardly from the outer surface of described upper valve component and is set to be parallel to the central shaft of described nozzle assembly, and is configured to prevent described upper valve component from rotating.

6. valve module according to claim 1, wherein, the conical top of the step helix bottom side valve surface of described upper valve component extends with the angle of the required central shaft relative to described valve module, to guide water with required angle.

7. valve module according to claim 6, wherein, described required angle is between 11 to 17 degree.

8. valve module according to claim 1, comprises radian adjustable ring further, and described radian adjustable ring is operably connected to described lower valve component and central shaft about described nozzle assembly is rotatable, with mobile described lower valve component.

9. valve module according to claim 8, wherein, described radian adjustable ring is operably connected to described lower valve component, so that described lower valve component to rotate and the central shaft being parallel to described valve module moves axially, to regulate the length of described arcuate slots along with described radian adjustable ring.

10. valve module according to claim 1, comprises further, is positioned at the upstream throttle element of described lower valve component and described upper valve member upstream, to control to the current of described lower valve component and described upper valve component.

11. 1 kinds of flusher spray nozzle assemblies, described flusher spray nozzle assembly comprises:

Nozzle body, described nozzle body comprises the entrance of pressure (hydraulic) water and the outlet in described entrance downstream;

Rotary radian adjustable ring, described rotary radian adjustable ring is arranged on described nozzle body, so that the rotation of described radian adjustable ring is expanded and reduced arc outlet, to set the covering radian of described flusher spray nozzle assembly;

Rotating range adjustable ring, described rotating range adjustable ring is arranged on the described housing of described radian adjustable ring upstream, so that the rotation of described range regulation ring increases or reduces downstream flow area, to control to the current of described arc outlet; With

Rotary water distributor, described rotary water distributor is installed on center shaft, described central shaft extends through arc adjustable nozzles, described arc adjustable nozzles comprises valve module, and described valve module is positioned at the below of described rotary water distributor and is operationally directed to by water on described rotary water distributor in described nozzle body;

Described valve module comprises further:

Upper valve component, described upper valve component comprises the top with conic steps spiral bottom side valve surface; With

Lower valve component, described lower valve component comprises central opening and step helix top side, the top valve surface around described central opening, described upper valve Components installation is in described lower valve component, described lower valve component is made to be moveable relative to described upper valve component, so that the interaction between the top step helix bottom side valve surface of described upper valve component and the lower step spiral top side valve surface of described lower valve component limits described arc and exports, with when water flows through described valve module, the water discharge stream spreading over the required taper covered on radian is provided.

12. flusher spray nozzle assemblies according to claim 11, wherein, described radian adjustable ring has buckle and fixes ear, and described buckle is fixed ear and is used for being connected to described nozzle body, to allow the rotation relative to described nozzle body, keep fixing simultaneously.

13. flusher spray nozzle assemblies according to claim 12, wherein, described nozzle body has the radian setting ring fixed slit that contiguous described radian adjustable ring buckle fixes ear.

14. flusher spray nozzle assemblies according to claim 13, wherein, the rotation of described radian adjustable ring changes the length of described arc outlet.

15. flusher spray nozzle assemblies according to claim 11, wherein, described range regulation ring comprises upstream adjustable region opening, and described upstream adjustable region opening is in the nozzle body flow path of described nozzle assembly.

16. flusher spray nozzle assemblies according to claim 11, wherein, described nozzle body comprises the driven plunger for making rotary water distributor extend and be retracted to outside described nozzle body.

17. flusher spray nozzle assemblies according to claim 11, wherein, described rotary water distributor comprises the viscous damping assembly of the rotary speed operationally limiting described rotary water distributor.

18. flusher spray nozzle assemblies according to claim 11, wherein, the covering radian of setting and the scope of setting are visual from the outside of described flusher nozzle component.

19. 1 kinds of flusher shower nozzles, described flusher shower nozzle comprises:

Base portion;

Taper adjustable nozzles, described taper adjustable nozzles limits adjustable arc-like rows discharge hole;

Rotary water distributor, described rotary water distributor is supported by the axle upwards extended from described base portion and is adapted to by the current punching press of ejecting from described nozzle; With

Radian adjustable ring, described radian adjustable ring is rotatably installed on described base portion, and described radian adjustable ring is operationally connected with described nozzle to regulate described arc-like rows discharge hole.

20. flusher shower nozzles according to claim 19, wherein, described taper adjustable nozzles comprises:

Upper valve component, described upper valve component comprises the top with conic steps spiral bottom side valve surface; With

Lower valve component, described lower valve component comprises central opening and step helix top side, the top valve surface around described central opening, described upper valve Components installation is in described lower valve component, described lower valve component is made to be moveable relative to described upper valve component, so that the interaction between the top step helix top side valve surface of described upper valve component and the lower step spiral top side valve surface of described lower valve component limits described arc-like rows discharge hole, during to flow through described taper adjustable nozzles when water, the water discharge stream spreading all over the required taper covered on radian is provided.

21. flusher shower nozzles according to claim 20, wherein, are connected to described radian adjustable ring described lower valve members being operable, and are configured such that the rotation of described radian adjustable ring allows at 0 ° until regulate described discharge orifice between 360 °.

22. flusher shower nozzles according to claim 20, wherein, be connected to described radian adjustable ring described lower valve members being operable, and be configured such that the rotation of described radian adjustable ring allows at about 60 ° until regulate described discharge orifice between about 360 °.

23. flusher shower nozzles according to claim 19, wherein, described axle is normally fixed and described water-locator rotates relative to described axle.

24. flusher shower nozzles according to claim 23, wherein, described water-locator is installed as rotating about described axle, and be formed with the internal chamber that limited by the inner surface of upper bearing and lower bearing and water-locator and be fixed on described axle and be positioned at the stator of described chamber, wherein said chamber is filled with viscous fluid at least in part.

25. flusher shower nozzles according to claim 24, described flusher shower nozzle comprises the resistance ridge on the inner surface of described internal chamber.

26. flusher shower nozzles according to claim 20, wherein, the central through hole of described axle is formed through the center of described upper valve component and described lower valve component, and, hydraulic drives piston is provided with, to act on the shaft under the power of hydraulic pressure and to be popped up by rotary flow diverter in described lower nozzle housings.

27. flusher shower nozzles according to claim 26, described flusher shower nozzle comprises around described axle and resists the movement of described hydraulic drives piston and biased helical spring, and described helical spring is positioned at and is communicated to atmospheric position.